SNMP Monitoring of a Transfer Switch relay

Chris Burwell cburwell at
Fri May 14 20:12:55 UTC 2010

I have used the APC Environmental Manager (EMU) to do this. In our
case we ran a 4-pair line from the generator to the EMU. One pair was
connected to the EMU so that we could monitor and alert on the
run-cycles of the generator. Our transfer switch did not have these
capabilities, but you could apply the same configuration we used for
out generator.

The EMU has built-in alerting as well as the ability to send SNMP traps.

- Chris

On Fri, May 14, 2010 at 1:59 PM, Tom Beecher <tbeecher at> wrote:
> I'm presently doing some research into a SNMP-enabled device to monitor a
> set of aux contacts on our transfer switch in order to be able to monitor
> it's status (on generator or on commercial) from our monitoring platform.
> I've seen a few interesting devices out there that can accomplish this,
> however I thought I'd query the list to see if anyone has thoughts about a
> particular unit they've worked with.
> Thanks in advance,
> Tom

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